基于DM642的MPEG-2传输流解复用再复用系统设计

卢国勋; 孙军; 周军

doi:10.11834/jig.2006011274

信息编码、解码 | 浏览量 : 0 下载量: 174 CSCD: 0

PDF
导出
分享
收藏
专辑

基于DM642的MPEG-2传输流解复用再复用系统设计
System Design for De&Re-multiplexing of MPEG-2 Transport Stream Based on DM642
2006年11卷第11期页码：1605
纸质出版：2006
DOI： 10.11834/jig.2006011274
稿件说明：

移动端阅览

卢国勋, 孙军, 周军. 基于DM642的MPEG-2传输流解复用再复用系统设计[J]. 中国图象图形学报, 2006,11(11):1605. DOI： 10.11834/jig.2006011274.

System Design for De&Re-multiplexing of MPEG-2 Transport Stream Based on DM642[J]. Journal of Image and Graphics, 2006, 11(11): 1605. DOI： 10.11834/jig.2006011274.

摘要

为了提高视频流传输系统的性能，并简化设计，提出了一种基于TI DM642处理器的MPEG-2传输流解复再复用系统设计。与以前的设计相比，该设计由于充分利用了DM642处理器内部的Video Port、PCI、EDMA等硬件特性

从而提高了系统性能。同时还提出了一种基于VIC Port的PCR校正方法，用于简化PCR校正的实现。测试表明

该设计能对传输码率为80Mbps的传输流进行实时解复用再复用，从而满足了实际应用对码率的要求。

Abstract

To achieve high performance and simplify the design

this paper presents the system design for de&re-multiplexing of MPEG-2 TS(transport stream) based on DM642.Compared to former methods

this design uses many DM642 internal hardware properties such as Video Port

PCI(peripheral component interconnect)

EDMA(enhanced direct memory access) etc

by which the system performance is enhanced.The algorithm of PCR(program clock reference) correction based on VIC Port(voltage controlled crystal oscillator interpolated control port) is proposed which reduces the complexity of PCR correction.Experiments have proved that the max TS processing rate is 80 Mbps

which meets the application requirements.